wrote:
You can't use any modified equipment on GMRS. The equipment you use
MUST be GMRS type accepted. And... don't forget you need a license.

For emergency communications it doesn't matter.
http://frwebgate.access.gpo.gov/cgi-...=403&TYPE=TEXT

Sec. 97.403 Safety of life and protection of property.

No provision of these rules prevents the use by an amateur station
of any means of radiocommunication at its disposal to provide essential
communication needs in connection with the immediate safety of human
life and immediate protection of property when normal communication
systems are not available.